Boat for speed



June 13; 1933-.

o. MARTIN I BOAT. FOR SPEED Filed No v. 1932 2 Sheets-Sheet l T 'gi lu ii i INVENTOR 10 section thru 11116 AA Patented June 13, 1933 UNITED STATES PATENT OFFICE WARREN DELOBS mm, 011031 BLAKELY, WASHINGTON BOAT FOR SPEED Application filed Iovember 5, 1888. Serial llo. 641,881.

The invention relates to the propulsion of a boat by means of two endless air belts, one on either side of the keel. These belts also serve as the bottom of the boat and nothing else touches the water but the keel. More than two belts may be used on larger boats.

In the accompanying drawings Fig. 1 is a plan'view of the boat as it appears with the deck rem oved. Fig. 2 is an elevation of Fig. 1. Fig. 3 is a side elevation view of the boat showing how {he s7ides cover the belt and shows the water terial on said belt and valve means for ing said pockets.

WARREN DELOSS MARTIN.

Fig. 4 is a perspective view of the main belt with pockets. perspective view ofa section of the main belt. Fig. 6 is an elevation of one of the pneumatic tubes. F of the pneumatic tubes with valve. I

In Fig. 1 the belts 11 are run over the Fig. 5 is an enlarged scale ig. 7 is an end view of one front drums 22 and the rear drums 4-4.

The drums are: shown by the dotted lines. The belts are driven from the rear drums 44, by gears in housing 3, but may be driven from either front or rear.

There are screws provided on the bearings of the shaft of the front drums at 9 for taking up the slack in the belts.

The rolls 5 in Fig. 2 are held in the position shown, by racks 8 to allow the belts to enter the water gradually and leave the water gradually. Each belt 1--1 consists of a main section 9, as shown in Fig. 5, to which are attached tube pockets 10 into which tubes 11 are inserted- These tubes are inflated with air through a suitable valve 12.

Air tanks 6 will also be placed the upper belt.

I claim:

1. A propelling device ing a driving drum,

between the rolls 5 and for a boat, comprisa driven drum, an endless flexible belt mounted on said drums,

pockets of flexible material on said belt and valve means for inflating said pockets to support the boat in water.

, 2. A propelling device for a boat having a hull, comprising a plurality of shafts 'ournailed to lie crosswise of the longitu inal axis of said hull, driving and driven drums are used to insure safety and 

